net: ks8851: Factor out TX work flush function

While the SPI version of the KS8851 requires a TX worker thread to pump
data via SPI, the parallel bus version can write data into the TX FIFO
directly in .ndo_start_xmit, as the parallel bus access is much faster
and does not sleep. Factor out this TX work flush part, so it can be
overridden by the parallel bus driver.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Petr Stetiar <ynezz@true.cz>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c
index 4283ba5..458c869 100644 (file)
--- a/drivers/net/ethernet/micrel/ks8851.c
+++ b/drivers/net/ethernet/micrel/ks8851.c
@@ -781,6 +781,17 @@ static void ks8851_tx_work(struct work_struct *work)
        ks8851_unlock(ks, &flags);
 }
 
+/**
+ * ks8851_flush_tx_work - flush outstanding TX work
+ * @ks: The device state
+ */
+static void ks8851_flush_tx_work(struct ks8851_net *ks)
+{
+       struct ks8851_net_spi *kss = to_ks8851_spi(ks);
+
+       flush_work(&kss->tx_work);
+}
+
 /**
  * ks8851_net_open - open network device
  * @dev: The network device being opened.
@@ -880,11 +891,8 @@ static int ks8851_net_open(struct net_device *dev)
 static int ks8851_net_stop(struct net_device *dev)
 {
        struct ks8851_net *ks = netdev_priv(dev);
-       struct ks8851_net_spi *kss;
        unsigned long flags;
 
-       kss = to_ks8851_spi(ks);
-
        netif_info(ks, ifdown, dev, "shutting down\n");
 
        netif_stop_queue(dev);
@@ -896,7 +904,7 @@ static int ks8851_net_stop(struct net_device *dev)
        ks8851_unlock(ks, &flags);
 
        /* stop any outstanding work */
-       flush_work(&kss->tx_work);
+       ks8851_flush_tx_work(ks);
        flush_work(&ks->rxctrl_work);
 
        ks8851_lock(ks, &flags);